Bus-bar insulator and support.



F. E. GETTS.

BUS BAR INSU'LATOR AND SUPPORT.

APPLICATION FILED JUEY 31.1916.

htented July 17, 1917.

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-UNITED STATES PATENT OFFICE.

:FRANK E. GET'I'S, OF CHICAGO, "ILLINOIS, ASSIGNOR TO ELECTRICALENGINEERS EQUIPMENT COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OFILLINOIS.

BITS-BAR INSULATOR AND SUPPORT.

Specification of Letters Patent. Patented J uly 17, 1917.

Application filed Jiily 31, 1916. Serial No. 112,236.

To all whom it may concern:

Be it known that I, FRANK E. GETTS, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a certain new and useful Improvement in Bus-Bar Insulators andSupports, of which the following is a full, clear, concise, and exactdescription,

reference being had to the accompanyingdrawings, forming a part of thisspecification.

My invention relates to busbar insulators and supports.

In the construction of switching and distributing boards it is necessaryto carry common busbars to a number of points upon the insulating boardor slab in such manner as to secure complete insulation from thegrounded framework or other supporting means, and at the same timesecure good mechanical support to insure permanence and security. I

The object of the present invention is to provide an insulating supportsuch as may be employed for supporting busbars or the like. Oneparticular point of novelty which I wish to emphasize is the use of aninternal reinforcing member for the porcelain or other friable materialwhich constitutes the body of insulation.

Other features of novelty will be apparent to those'skilled in the artfrom the following description;

In the accompanying drawings in which I have illustrated onemodification of my inventi.on

Figure 1 is a front elevation with parts broken away; and

Fig. 2 is a plan view of the same.

The device which I have shown comprises essentially a body of insulation1, which is provided with a corrugated surface in order to make thecreepage distance greater. This body 1 forms the insulator proper and ingeneral contour is a cylinder or frustum of a cone having an upper fiatradial base 2 and a lower fiat radial face 3. The insulator 1 isprovided with an axial recess 4 the interior surface of which isprovided with suitable corrugations 5 which permits the cementitious orbinding material 6 to insure a firm grip upon the interior surface ofthe recess. The insulator 1 seats upon a base plate 7. The base plate 7is provided with a flat bottom to permit it to seat solidly base plate 7is cored out as shown in Fig. i

l, leaving however the axial boss 11 which is screw threaded to receivea. short section of rod 12 that projects up into the cavity or recess Iin the insulator 1. The rod 12 is provided with peripheral notches 13for permitting the cementitious material 6 to secure a firmer hold uponthe same.

The lower part of the insulator is provided with a groove 14 adjacentthe radial face 3 and in a similar manner the base plate 7 is providedwith a peripheral groove 15. A split clamp 16, which embraces theadjacent edges of the two parts, has suitable flanges fitting into thegrooves 1 1 and 15 serving to clamp the two parts together. A filling ofcement 17 or the like may be employed between the adjacent parts and thesplit clamps 16.

A metal supporting block 18 rests upon position by means of a splitclamp 19 which has-flanges seating in the grooves 20 and 21 for holdingthese two parts firmly in engagement. The clamping block 18 is providedwith symmetrically projecting ears or lugs 22 shown in this particularcase as four in number. A clamping member 23 of generally rectangularform is provided with suitable lugs 2% which register with the lugs 22and form suitable means for reception of the bolts 25 which hold theclamp and block together. The flat busbar 26 is gripped between theclamp 23 and the block 18 by means of these bolts. It is obvious thatthe busbar 26 can be passed between the clamp 23 and the block 18 in adirection at right the top face of the insulator 1 and is held in l v 19is opened, smeared with smooth-on-and then applied and clamped againstthe adjacent parts to hold them firmly in position.

While I have described my invention with considerable particularity, Iwish it to be understood that I do not intend to be limited to theprecise and specific details of construction except as the same are setforth in the appended claims, as I consider the device. capable ofmodification and variation in proportions and dimensions.

I clalm: 1. In comblnatlon a clrcular base plate having a flat radialface, a reinforcin proje'cti'on extending axially from said ace, a bodyof insulation having a radial face and having an axial recess forreceiving said reinforced projection, said body of insulation having aperipheral groove adjacent said radial face and said base plate having asimilar peripheral groove adjacent its radial face and an encirclingclamp having portions adapted to lie in said grooves to clamp said bodyand said base plate together.

2. In combination, a circular. base plate having a flat radial face,said base plate having means for clamping the same to a support, areinforcing projection extending axially from said face, said projectioncomprising a short rod screwed into said base plate, said rod havingnotches cut in the side wall thereof, a body of insulation having aradial face and an axial recess for receiving said reinforcing rod, theinterior face of saidre cess being roughened, a fillin ofcementitiousmaterial between the wa ls of said recess and 'said rod, said body ofinsulation having a peripheral roove adjacent said radial face and saidase plate having a similar peripheralgroove adjacent its radial face,and an encircling clamp havingv portions adapted to lie in said groovesto clamp said body and base plate together.

3. In combination, a base havin a plane radial face rovided with anaxifi pro'ection, an insu ating body having a radial ace provided withan axial opening to receive said projection, said projection and openinghaving annular recesses toserve as holding means for cement or the like,said base plate and insulating body having annular grooves adjacenttheir adjoining faces and clamping means engageable with said grooves toreinforce the insulator.

, 4. In combination, an insulating conductor support comprisin anon-conducting body having a recess t erein, a base plate having areinforcing projectlon to seat in said recess, a conductor block carriedby the body, said body, plate and conductor block having peripheralgrooves and a'plurality of clamping elements having flanges to engage insaid grooves and rigldly connect said body, plate and conductor block.

5. In combination, an insulating conductor support comprising a baseplate havinga peripheral groove and a reinforcing projee tion, aninsulating supporting body having a plurality of parallel peripheralgrooves along the outer face thereof and a longitudinal recess toreceive said projection, a conductor block receivable on the free end ofI said body, and provided with a peripheral groove, means to secure aconductor to saiding anges engageable in the peripheral grooves in saidbody, face plate and conductor block. 7

6. In combination, a conductor support comprising a base plate, anon-conducting block and a pair of clamping members havbody havlngperipheral grooves and a longitudinal recess opening at one end thereof,

said base plate having a reinforcing column to engage in said recess, aconductor block, having a peripheral groove, and clamping means toengage the grooves in said base plate and clamping block andthe .endmostgrooves of said insulating body.

In witness whereof, I hereunto subscribe my name this 25th day of July,A. D. 1916.

. I FRANK E. GETTS.

